Patent · US Active

Secure and efficient cloud storage with retrievability guarantees

US10528751B2 · kind B2 · utility

1Cited by

1References

19Claims

0Family size

Assignee

NEC CORPORATION · JP

Inventors

Wenting Li · Longbeilingcun, CN
Ghassan Karame · Heidelberg, DE

Key dates

Filing date	Apr 13, 2017
Grant date	Jan 7, 2020
Priority date	—
Expiry date	Nov 2, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/3257
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for secure cloud storage of user data includes deriving, using content of the user data and a secret key stored by a server, an encryption key, encrypting, using the derived encryption key, the user data to provide encrypted user data, applying an all-or-nothing transform on the encrypted user data to produce blocks of transformed encrypted user data, partitioning the blocks of transformed encrypted user data to data partitions, creating, for each of the data partitions, an authenticator, and performing data deduplication on the transformed encrypted user data.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.